About fetch

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JPA Doc
17

javax.persistence.criteria.ListJoin

expression of the given type Since: JPA 2.0 Fetch fetch(String attributeName) Create a fetch join to the specified attribute using an inner join. Create a fetch join to the specified attribute using ... : the resulting fetch join Throws: IllegalArgumentException - if attribute of the given name does
JPA Doc
17

javax.persistence.criteria.MapJoin

: expression corresponding to the map entry Since: JPA 2.0 Fetch fetch(String attributeName) Create a fetch join to the specified attribute using an inner join. Create a fetch join to the specified ... of the join Returns: the resulting fetch join Throws: IllegalArgumentException - if attribute of the given
JPA Doc
17

javax.persistence.criteria.PluralJoin

of the expression Returns: new expression of the given type Since: JPA 2.0 Fetch fetch(String attributeName) Create a fetch join to the specified attribute using an inner join. Create a fetch join ... for the target of the join Returns: the resulting fetch join Throws: IllegalArgumentException
JPA Doc
17

javax.persistence.criteria.Root

- intended type of the expression Returns: new expression of the given type Since: JPA 2.0 Fetch fetch(String attributeName) Create a fetch join to the specified attribute using an inner join. Create a fetch join to the specified attribute using an inner join. Parameters: attributeName - name
JPA Doc
17

javax.persistence.criteria.SetJoin

expression of the given type Since: JPA 2.0 Fetch fetch(String attributeName) Create a fetch join to the specified attribute using an inner join. Create a fetch join to the specified attribute using ... : the resulting fetch join Throws: IllegalArgumentException - if attribute of the given name does not
Forum
17

Detaching objects after JOIN FETCH

Hi, I have a question about detaching objects after issuing query with JOIN FETCH. Let's say I ... { @OneToMany(fetch = FetchType.LAZY, cascade = CascadeType.ALL) List aClasses; } Now, I want to fetch all B classes with all A classes skipping lazy loading: select b from B b join fetch b
Forum
16

@OneToMany(fetch = FetchType.LAZY) list is always null

Hello. @OneToMany(fetch = FetchType.LAZY) doesn't work when using EJB or something else related ... ") private int id; @OneToMany(fetch = FetchType.LAZY, cascade = CascadeType.ALL) private List ... ; } // getters and setters } public class Parent { // ...id @OneToOne(fetch
Forum
16

Eager Fetch is not stable for collection or map types?

types is not stable, we lost them sometimes after JVM restarted. Eager fetch is properly set ... and fetch is: @Entity public class Game {     .......     @ElementCollection(fetch=FetchType ... .size() > 0) { Game g = result.get(0); logger.debug("[trace_fetch] ["+g.getMembers
Forum
16

Mapped By Fetch is very Slow

, go the MyEntity class and remove "mapped-by". You obtain 1 second max of query fetch. So my performance issue ... ) {    System.out.println("FAILED TO FETCH !");   } } Regards,  Xirt Thank you for this report ... if this query. Using the Enhancer can improve performance. Support, When you fetch 10 000 entities
Forum
16

Is there any restriction when using fetch=FetchType.LAZY ?

Hi, I came across a weird behavior when using fetch=FetchType.LAZY in a complex code. However I ... in object declaration @OneToMany(fetch=FetchType.EAGER, cascade = CascadeType.ALL) private LinkedList referencedObj; My test suite is running well. 2. However when I change fetch to LAZY